Search & Filtering
For a particular device, in the house, it has alternating current (AC) and voltage of 20.0 A and 280 V respectively. What are their amplitude values?
A microscope is sharply focused on a mark. When a parallel plate of glass 4.8 mm thick is placed over the mark, the microscope has to be raised 0.18 cm to refocus. What is the refractive index of the glass?
A prism whose refracting angle is 600 causes a minimum deviation of 48 in a monochromatic bean of light. Calculate the refractive index of the prism for that wavelength.
Two point particles, one with charge +8.00 nC and the other with charge -2.00 nC, are separated by 4.00 m. The electric field in N/C midway between them is:
Three charges are fixed to an xy-coordinate system. A charge of
18µC is on y = 3.0m. A charge of −12µC is at the origin. Lastly, a charge of 45µC is on the x-axis at x = 3.0m. Determine the magnitude and direction of the net electrostatic force on the charge at x = 3.0m
An infinitely long cylinder of radius R has its axis along z-axis. It has a uniform volume charge density and it is rotating with constant angular velocity. Find the magnetic field produced by it everywhere.
Derive the expression of the trajectory when a charged particle of
charge q is subjected to a magnetic field perpendicular to its plane.
From here comment on the trajectory of the particle.
Enrichment Activity 2. Beam Me a Light
In this activity you will be needing:
Flashlight
Red, blue, and green construction paper
See-through colored cellophane
Masking tape or a rubber band
Research Questions
1. Why did the papers look white, red, blue, and green (respectively) in white light?
2. How did the construction and cellophane affect the white flashlight beam?
3. Why did the yellow and green papers seem to lose their color when red light was
shined on them?
Procedure
1. Darken the room as much as possible.
2. Turn on the flashlight and aim it at the white paper. Observe and record the
color of the paper in the data table,
Question:
1. Why did papers look white, red, blue, and green (respectively) in white light?
2. How did the construction and cellophane affect the white flashlight beam?
3. Why did the yellow and green papers seem to lose their color when red light is shined on them?
Enrichment Activity 2. Beam Me a Light
In this activity you will be needing:
Flashlight
Red, blue, and green construction paper
See-through colored cellophane
Masking tape or a rubber band
Research Questions
1. Why did the papers look white, red, blue, and green (respectively) in white light?
2. How did the construction and cellophane affect the white flashlight beam?
3. Why did the yellow and green papers seem to lose their color when red light was
shined on them?
Procedure
1. Darken the room as much as possible.
2. Turn on the flashlight and aim it at the white paper. Observe and record the
color of the paper in the data table,
Question:
1. Why did papers look white, red, blue, and green (respectively) in white light?
2. How did the construction and cellophane affect the white flashlight beam?
3. Why did the yellow and green papers seem to lose their color when red lights was shined on them?
In the ground state of the hydrogen atom the electron describe a circular orbit of radius 5.3×10^-11m at a speed 2.2×10^6ms^-1(a) what is the average electric current resulting from the electron movement (b) calculate the value of B established by the electron at the nuclues
